31049123 has 16 divisors (see below), whose sum is σ = 37920960. Its totient is φ = 24815616.

The previous prime is 31049119. The next prime is 31049159. The reversal of 31049123 is 32194013.

It is not a de Polignac number, because 31049123 - 2² = 31049119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31049323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12293 + ... + 14601.

It is an arithmetic number, because the mean of its divisors is an integer number (2370060).

Almost surely, 2^31049123 is an apocalyptic number.

31049123 is a deficient number, since it is larger than the sum of its proper divisors (6871837).

31049123 is a wasteful number, since it uses less digits than its factorization.

31049123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 31049123 is about 5572.1739922583. The cubic root of 31049123 is about 314.3039067490.

The spelling of 31049123 in words is "thirty-one million, forty-nine thousand, one hundred twenty-three".